Pipe-machine.



Patented Apr I7, I900. W. P. PARSONS & A. TUITE.

PIPE MACHINE. (Application filed. novfzz, 1899.)

(No Model.)

- WITNESSES UNITED STATES PATENT omen XVILLIAM P. PARSONS AND ANDREW TUITE, OF ALBANY, INDIANA;

PIPE-MACHINE.

' SPECIFICATION forming part of Letters Patent No. (s r ees, dated April 17, 1900.

W '7 Applioationfiledl fovem'ber 22,1899. Serial No."737,898. "(N0 modal.)

To all whom it may concern:

Be it known that we, WILLIAM P. PARSONS and ANDREW TUITE, citizens of the United This invention relates particularly to machines for making glass pipes used for conducting water or gas or as a conduit for electric wires or the like; and the'object is to provide a machine by means of which pipes or pipe-sections may be quickly and economically made.

We will describe a pipe-machine embodying our invention and then point out the novel features -in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional elevation of a pipemachine embodying our invention. Fig. 2 is a section'on the line 2 2 of Fig. 1. Fig. 3 is a section on the line 3 3 of Fig. 1. Fig. 4 is a section on the line 4 4 of Fig. 2.

Referring to the drawings, 1 designates a section of a two-part mold which is clamped together when in use by pins passing through lugs 2 3 011 one section and a lug 4 on the other section and also through lugs 5 6 on one section at the opposite side and through lugs 7 8 on the other section at the opposite side. The pin 8 passes into the base-plate and forms a pivot on which the mold-sections may swing. The mold at its upper end has a gate 9, through which the molten glass is to be poured. to form the tube, (indicated at w,) and also at the upper end of the mold is a vent-port 10, through which gases and hot air may escape, this vent being controlled by a Valve 11, shown in the shape of a plug-valve mounted on a shifting lever 12. The mold-- sections are adapted to rotate or open on a bed-plate l3, and to provide for an easy rotary 1 suitable pressure, and also leading down through the core is a port 18. Cold water or air passed into the port 17 will keep the core at the proper temperature and exhaust through the port 18, as the two ports communicate at the lower end of the core. The core is also provided with air-ports 19 and 20, which lead from the upper end of the core out through the lower end of the same. A stand-pipe 22 extends through the bed-plate 13 into the mold and serves to form the flange onthe pipe or tube. The stand-pipe 22 projects into a pit 23 and has its end secured to a conduit or pipe 24, which is connected with an air compressoror tank. Within the standpipe 22 is a perforated air-pipe 21, whose upper end, as shown, is made conical and fits in a correspondingly-shaped recess in the end of the core. Into this recess the air-ports 19 and 20'open, as clearly shown in Fig. 4, and through said ports the compressed air is allowed to escape. The compressed air is employed to take the place of the core or to fill the space left by it when being withdrawn, so as to hold the material in shape and prevent it from collapsing upon the withdrawal of the core.

As a means for shifting the core laterally we employ a swinging crane 25, through the free end of which said core passes, the crane being mounted to rotate on bearing-balls 26, as clearly indicated in the drawings. The crane may be clamped to the core 15 to hold the core in place by clamping-bolts 27.

The operation is as follows: The parts being in the position shown in Fig. 1 and the molten glass having been poured into the mold through the gate 9, water or air is then admitted to the port 17 and passing down and out through the port 18 keeps the core cool, and the core is then raised slowly, and as soon as the core has started the compressed air is admitted to the bottom of the mold and filling the space left by the core holds and keeps the glass in shape in the mold while the core is being withdrawn.

Having thus fully described our invention, we claim as new and desire to secure by Let? ters Patent 1. A pipe machine, comprising a mold, a core movable in the mold and having longitudinal passages one for conducting a cooling medium, and the other air under pressure; the air-passage leading out through the ends oi" the core, and means for supplying compressed air to the mold below the lower end of the core, substantially as specified.-

2. Apipe-machine, comprising a mold, a

core movable vertically in the mold,a support for said core, a port leading longitudinally through said core, another port extending longitudinally through said core and communicating with the first-named port at the bottom, a stationary stand-pipe, a perforated airtube arranged in said stand-pipe, and an airpipe communicating with the stan d-pipe, snbstantially as specified.

3. In a glass-pipe-forming machine, a mold consisting of separable sections, and having a vent or outlet for hot air, a valve for controlling said vent, a core movable in the mold,

and having longitudinal passages, one for a cooling medium, and the other for air under pressure, and means for supplying compressed air to the a core, substantially as specified.

4. In a pipe-machine, the combination with a mold, of a movable core having a recess in its lower end and longitudinal passages opening into the recess, a stand-pipe projecting intothe mold, and a pipe for supplying compressed ain to the mold below the core, said .pipe being arranged in the stand-pipe, submold mic-w the end of the of the core, said pipe being adapted to supply compressed air to'the mold below the-core, substantially as described.

s. WILLIAM 1 PARSONS.

I ANDREW TUITE.

\Vitnesses: v

E. LJLEWIs, D. L; SPEIOKER. 

